DIY STM32 Programmer (ST-Link/V2-1)

ST-Link devices are almost essential when developing software for the STM32 MCUs. They are relatively cheap and easily available.

They roughly fall into two different categories. ST themselves make a number of them and they all work quite well. There are also a lot of Chinese clones available and while they have some limitations they also work quite well.

Original ST-Link V2.1

The schematic of the original ST-Link is readily available

Schematics

Miscellaneous Links

• NUCLEO-XXXXRX Schematics (includes ST-Link V2.1
• BUILDING A CUSTOM ST-LINK V2.1
• Chinese blog post creating a custom ST-Link